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Question
Evaluate:
`(2/(-3) xx 5/4) + (5/9 xx 3/(-10))`
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Solution
`= ((2xx5)/((-3)xx4)) + ((5xx3)/(9xx(-10)))`
`= ((1xx5)/((-3)xx2)) + ((1xx1)/(3xx(-2)))`
`= (-5)/6 + (-1)/6`
`= (-5-1)/6 = (-6)/6 = -1`
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